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P0C69 - OBD Trouble Code

OBD Code P0C69 - Generator Position Sensor Circuit "B"

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A resolver is a style of sensor that is utilized to check the placement of the magnetic poles, within the rotor of a motor generator. Being aware of the poles positioning is absolutely necessary for making sure of the exact command of MG2 and MG1. Every resolver is comprised of a stator with an excitation coil and 2 detection coils, S and C. As the rotor is oval shaped, this sets a gap between the stator and rotor that changes while the rotor is turning. A changing current with a well-advanced frequency streams in past the excitation coil, and detection coils S and C output that changes currents in a manner conforming to the sensor rotor placement.

Learn More About OBD Error Code P0C69

An inverter that is installed with converter assembly (MG ECU) checks for the complete placement of the rotor in a manner conforming to the stages of detection coils S and C and their waveform heights. Moreover, the CPU measures the quantity of fluctuation in the placement within a well-advanced time length, as a way to utilize the resolver in the style of a speed sensor. The MG ECU detects signals output by the motor resolver and checks for function failures.


What causes this problem with the Generator Position Sensor Circuit 'B'


  • Defective Inverter with converter assembly
  • Damaged Hybrid vehicle generator assembly
  • Faltered Hybrid vehicle motor assembly
  • Corroded harness or connector

Replace/Repair These Parts To Fix OBD Code P0C69

  1. Speed Sensor - The motor resolver is a speed sensor that creates a current of waves that signal the complete placement within a single revolution, in which these signals are usually fluctuating with a resolver interface board that energizes a digital signal. You will see that the activity is associated with the speed or position control. The most frequent disruptions that you will see is when the motor is vibrating, speed is rotating differently, engine noises are offset, there is a different accuracy in movement positioning, system positioning is vibrating, positioning is incorrect, and there are unplanned stops in movement. A majority of motor drives and motion/positioning controls exercise a run-time testing of the process within the calculated equipment and they can detect the most common errors and put the motor to a stop. You can find a professional mechanic that can detect the function of resolver and encoder within the motor, so it makes it so much easier to understand the effects of these errors.
  2. Fuel Shutoff Switch - A most recurrent symptom of a possible issue with the fuel pump shut off switch is an engine that suddenly stop running as it drives. If the fuel pump shut off switch fails to perform as the engine is operating, it might shut off the fuel pump and lead the engine to stop running. Detecting and pressing the reset button for the switch might once again activate the fuel pump. A second symptom of an issue ridden fuel pump shut off switch is a switch that staggers for no clear explanation. A well-conditioned switch is going to shut off the fuel pump when it inspects the car has stopped all of a sudden or violently, a defective switch, whatsoever, might stagger and shut off the fuel pump for no clear explanation, even if the car is facing regular driving settings. The switch has to be consistently reactivated as a way to make the car drive well. A third symptom of a problem with the fuel pump shut off switch is being in no condition to start. If the switch fails to function, it might forever impair the fuel pump and create a no starting condition. The engine might still be cranking when the key has been turned, regardless it will fail to start because of an ineffectual fuel pump. The fuel pump might remain without power, especially at times if having pressed the reset button, until replacing that switch. A no starting condition could also be the result of a broad variation of other problems, so diagnosing the vehicle is a great idea.
  3. Powertrain Control Module - A PCM that has decreased can become intermittent to a degree that your vehicle will fail to start or begin to stall when running. You will begin to see that exhaust fumes have shorted when the car is running and emissions system control signals are declining. Engine performance errors are a recurrent symptom of a probably issue with the PCM. The PCM might throw off the timing and fuel settings of the engine, which can put a negative impact on the engine performance. A faulty ECM may lead the vehicle to experience a reduction in fuel efficiency, power and speed. When constricting to a PCM that doesn’t perform correctly, you need to have it replaced as immediately.
  4. Fuel Injectors - As the engine misfires, the engine can quickly overheat and ignite the fuel mixture. A damaged fuel injector will not only causes issues with driving, but the effects will persist even as the engine idles. Instead of a smooth engine idle, it will be rough and irregular when the fuel supply is abrupt. If you suspect you have a damaged fuel injector, or suspect the fuel injectors may be failing, contact a professional mechanic.
  5. Catalytic Converter - A most recurrent symptom that is related to a poor or failing catalytic converter is a decline in engine performance. The catalytic converter is constructed into the car’s exhaust system, and this results in affecting the engine performance if it builds up to any further issues. A plugged converter will limit an exhaust flow, whereas a converter that is cracked will leak hazardous gas. Any of these defects can badly impact the engine performance and lead to a decline in power and speed, including fuel economy. Sounds of rattling coming from beneath the car are one other symptom of a poor or failing catalytic converter. If a catalytic converter gets aged or corroded inside from too much rich fuel combinations, the catalyst sealed honeycomb that interlocks on the internal side of the converter can fall apart or break up, which results in a rattle. The rattle might be more evident when car is started and will get worse over duration of time. If you surmise that your catalytic converter might be facing an issue, seek out a professional mechanic that can modify the vehicle to find out if it needs the catalytic converter to be replaced
  6. Battery Cable - A recurrent symptom of a problem with battery cables is usually when starting the vehicle. The battery cables are designed to send power from the battery to the vehicle’s whole electrical system. If there are clearly any issues with the cable, it might interrupt with their control to generate power. To start a vehicle takes a substantial amount of cranking power, so any apparent issues related to the cables that stop their control in generating power can result in problems getting in starting the vehicle. The vehicle might be facing an irregular or lagged cranking, including clacking noises when cranking, they typically happen by an insufficient current that manages to flow in past the cables to start up the vehicle. A second symptom of a poor or failing cable is the occurrence of damage on the terminals. The corrosion builds up because of the acidic steam that the battery produces when it gets to a boil when contacting heat of an operating engine. For a duration of time, the steam can start corroding the terminal and result in a build up of corrosion. Corrosion will produce an increase in resilience upon coming in contact with the surface of the terminal, and in more crucial situations, can also entirely plug the current of electricity. Corrosion will also trickle into the internal areas of the cable and corrode all that is inside. Normally a cable that is corroded to an extent needs to be replaced right away.
  7. Transmission Control Module - Problems with your transmission control module can result in the inability to switch properly, which can result in injuries and accidents. To conceal this, driving with a failed transmission control module can result in constant damage on the wiring within your transmission. When these symptoms become clearly evident to you, it is very important to have your vehicle check out by a professional mechanic as soon as possible.

Symptoms Of OBD Error Code P0C69

In any case your dealing with OBD P0C69 trouble code, there are substantially frequent symptoms that you can feel and contemplate. Our team has brainstormed a few helpful steps you can use to better comprehend this existing problem.


Common Symptoms


  • Damaged or corroded connector
  • If failing to clear out the DPF, this will revert the ECU to the Limp Home Mode up to correcting the problem.
  • Loss of power
  • The light may be kept on or light up irregularly while the DPF is revitalized. The engine will be slow when trying to speed up.

How To Correct P0C69 Generator Position Sensor Circuit "B"

It is very crucial to repair the P0C69 error code. Thereby, there are a few handy ways that will help you easily solve this problem:

  • The inlet door is usually closed when the key is turned to the OFF position and opened when the key is turned to the ON position.
  • Gathering entrance to enter a vehicle producer’s wiring diagrammatic overview will definitely certify it to be needful to diagnose this code with success. Conduct an attentive visual test on all PCM wiring and connectors.
  • The exhaust gas temperature sensor is normally used in diesel engines, gasoline burning engines, and even turbocharged engines.
  • Adjust or replace system circuitry, connectors, and/or components that fail to occur simultaneously with the vehicle producer’s specifications.

To achieve this, you must acquire some high-end vehicle components namely as Speed Sensor, Motor, Generator, Connectors, Powertrain Control Module, Exhaust Temperature, VCT Solenoid, Transmission Control Module and even more. Where will you get all of these amazing projects? Perhaps, you’ll find these at your local auto store? Why visit that place when your able to order high quality parts with Parts Avatar, and you can simply sit in your comfortable home when doing this. In the meantime, just look around in our website and order your must-have auto parts today.

Easy Diagnosis Of Engine Error OBD Code P0C69

If you desire to simply diagnose this error code, all you must do is go through these handy steps that are described as follows:


If the code occurs under these cases, you might be hearing very loud sounds, such as explosions, coming out of the rear of the vehicle when speeding up. First thing to do is detect the carburetor to make sure that the fuel and air combination are correctly balanced. If these conditions are correct, then rigorously detect the distributor cap for any cracks or hairline splits, for they can start up a backfire. Persist to the spark plugs and make sure they are cleaned and not damaged and detect the engine gaskets evident signs of damage, as it’s their role to make certain of the correct gas exchange inside the engine. The P0C69 OBD2 is particularly rooted to the camshaft (cam) timing. At this extent, if the cam timing is so very slow, the engine light will illuminate and this will set the code.


Common Mistakes When Diagnosing the P0C69 Code


  • Failed internal engine
  • Failed internal transmission failure
  • Need to update Transmission Control Module (TCM) software
  • Wiring issue

Other Diagnostic Codes Related To OBD Code P0C69

P0C6A - Generator Position Sensor Circuit "B" Range/Performance

P0C6B - Generator Position Sensor Circuit "B" Low

P0C6C - Generator Position Sensor Circuit "B" High

P0C6D - Generator Position Sensor Circuit "B" Intermittent/Erratic